Let f=amount invested at 4% and e=amount invested at 8%
0.04f+.08e=800
However, e=2f so the above equation becomes:
0.04f+0.08(2f)=800
0.04f+0.16f=800
0.2f=800
f=$4000, since e=2f
e=$8000
So Susan invested $4000 at 4% and $8000 at 8%.
Gravity is below us which pulls u down
Answer: Choice C) y = 2x
The line goes through the origin, so the y intercept is b = 0
The slope is rise/run = 2/1 = 2 because we go up 2 units for every unit we go to the right. This is why m = 2.
Plug m = 2 and b = 0 into the slope intercept form to go from y = mx+b to y = 2x+0, which is the same as y = 2x.
The answer factored is
8(4+8x-5y)
